Origem, transporte e deposição do ouro em Manica (Moçambique)

Abstract

Key-Words: Zimbabwe craton - Mozambique - greenstone belt - gold - magmatic - vein and strata bound deposits- stratigraphic and structural controls ore dressing - prospection. The dífferent types of Archean gold deposits in the Manica greenstone belt of westem Mozambique are briefely descríbed in the context of their geological setting. Particular attention is devoted to the mineralogy, petrology, geological controls, refractoriness to treatmentand prospection of these gold deposits. The genesis of gold was stratigraphically controled, but structural and metamorphic events related to the intrusion of late granites have concentrated and relocated the gold in different geological environments. The possibility of additional goldoccurences in differentrocks sequences is discussedas well as possible guidelines for future research and development.